Although European controlled trials of screening with a nonrehydrated guaiac-based fecal occult blood test (gFOBT) have shown it reduces colorectal cancer (CRC) deaths, real-world results could ...

The number of colonoscopies needed to detect one person with advanced neoplasia was 5.1 for guaiac-positive patients but only 2.7 for immunochemical-test–positive patients. Colonoscopy revealed ...